Experience Tumblr like never before
Wikipedia, most definitely.
For several years, nearly all of my Arthurian knowledge came from Wikipedia, because I (rather oddly) decided to try to get a comprehensive idea of Arthuriana as a whole before actually diving into medieval literature. This was probably because, despite having absorbed my very eccentric great-grandfather's belief that we were descendants of Merlin, I wasn't really into Arthuriana before I was given a prompt to write an alliterative paragraph featuring the letter G, started writing about Gawain, never came to a conclusion, decided to make it a novel, decided I needed to do research to write a novel, etc. This led my seventh grade self to a lot of bad takes, particularly about Lancelot, and very random headcanons. On the other hand, the assumptions I made about Agravaine, while based purely on his name, were mostly accurate.
I can spot at least four possible morals to this story and there are probably more, but I'll leave them to the reader.
Anyway enough King Arthur flour asks time to talk about Ragnelle.